The Group command (Ctrl + G) is an essential way to combine objects together and create more complex designs. But let’s say you just grouped two things together and realized that one of the objects you just grouped needs to be adjusted.
Instead of hitting Undo or using the Ungroup command (Ctrl + Shift + G) you can simply double-click on the object you just grouped and it will temporarily ungroup, allowing you to make adjustments until you click away from it.